language: add unary plus & minus, post increment & decrement operators, non-newline print builtin. fix block comments (#4)

ast/src/main/kotlin/gay/pizza/pork/ast/NodeCoalescer.kt

@@ -59,6 +59,9 @@ class NodeCoalescer(val handler: (Node) -> Unit) : NodeVisitor<Unit> {
   override fun visitStringLiteral(node: StringLiteral): Unit =
     handle(node)
 
+  override fun visitSuffixOperation(node: SuffixOperation): Unit =
+    handle(node)
+
   override fun visitSymbol(node: Symbol): Unit =
     handle(node)
 

ast/src/main/kotlin/gay/pizza/pork/ast/NodeType.kt

@@ -25,6 +25,7 @@ enum class NodeType(val parent: NodeType? = null) {
   PrefixOperation(Expression),
   SetAssignment(Expression),
   StringLiteral(Expression),
+  SuffixOperation(Expression),
   Symbol(Node),
   SymbolReference(Expression),
   VarAssignment(Expression),

ast/src/main/kotlin/gay/pizza/pork/ast/NodeVisitor.kt

@@ -40,6 +40,8 @@ interface NodeVisitor<T> {
 
   fun visitStringLiteral(node: StringLiteral): T
 
+  fun visitSuffixOperation(node: SuffixOperation): T
+
   fun visitSymbol(node: Symbol): T
 
   fun visitSymbolReference(node: SymbolReference): T

ast/src/main/kotlin/gay/pizza/pork/ast/NodeVisitorExtensions.kt

@@ -20,6 +20,7 @@ fun <T> NodeVisitor<T>.visit(node: Node): T =
     is ListLiteral -> visitListLiteral(node)
     is Parentheses -> visitParentheses(node)
     is PrefixOperation -> visitPrefixOperation(node)
+    is SuffixOperation -> visitSuffixOperation(node)
     is StringLiteral -> visitStringLiteral(node)
     is SymbolReference -> visitSymbolReference(node)
     is While -> visitWhile(node)

ast/src/main/kotlin/gay/pizza/pork/ast/PrefixOperator.kt

@@ -7,5 +7,7 @@ import kotlinx.serialization.Serializable
 @Serializable
 @SerialName("prefixOperator")
 enum class PrefixOperator(val token: String) {
-  Negate("!")
+  Negate("!"),
+  UnaryPlus("+"),
+  UnaryMinus("-")
 }

ast/src/main/kotlin/gay/pizza/pork/ast/SuffixOperation.kt

@@ -0,0 +1,29 @@
+// GENERATED CODE FROM PORK AST CODEGEN
+package gay.pizza.pork.ast
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+@SerialName("suffixOperation")
+class SuffixOperation(val op: SuffixOperator, val reference: SymbolReference) : Expression() {
+  override val type: NodeType = NodeType.SuffixOperation
+
+  override fun <T> visitChildren(visitor: NodeVisitor<T>): List<T> =
+    visitor.visitNodes(reference)
+
+  override fun <T> visit(visitor: NodeVisitor<T>): T =
+    visitor.visitSuffixOperation(this)
+
+  override fun equals(other: Any?): Boolean {
+    if (other !is SuffixOperation) return false
+    return other.op == op && other.reference == reference
+  }
+
+  override fun hashCode(): Int {
+    var result = op.hashCode()
+    result = 31 * result + reference.hashCode()
+    result = 31 * result + type.hashCode()
+    return result
+  }
+}

ast/src/main/kotlin/gay/pizza/pork/ast/SuffixOperator.kt

@@ -0,0 +1,12 @@
+// GENERATED CODE FROM PORK AST CODEGEN
+package gay.pizza.pork.ast
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+@SerialName("suffixOperator")
+enum class SuffixOperator(val token: String) {
+  Increment("++"),
+  Decrement("--")
+}